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Type *#06# at the mobile screen to know IMEI no of your mobile.send the IMEI no to me and i will reply you with unlocking code.IF Problem not Solved SoPlease New Software install in the Phone Problem will Solved

hi use master reset codes to reset your mobile .to get the codes visit mobile-unlocker here they ask the mobile model and the imei number of your mobile finally they send you the codes to reset your mobile.

i would like to help you but i need to know if that your phone is set on silent mode, becuz if it is on the silent mode you can switch it to normal mode and by that you solve the ringing issue,but regarding the voice problem; maybe the internal mic of your phone is not working and it needs to be replaced, if you still under warranty you can give it back to get it repaired for free, or try your local shop, becuz fixing such a problem on the phone's Board needs serious skills on electronics.Thank you.

WARNING: Restoring
the handset will permenently
Delete All Data, including ContactsNote: All locked pictures, videos, ringtones, music, sounds
and downloaded content will be permenently deleted when restoring the
handset to the default settings.To restore the handset to the factory default settings follow
the steps below:

While in standby mode,
press OK for Menu

Select Settings &
Tools (9)

Select Phone Settings
(6)

Select Security (9)

Enter the lock code,
default password is the last 4 digits of cell phone number, unless
it has
been changed, then press OK

Select Restore Phone
(5)

Highlight Yes, using the
navigation keys

Press OK
to confirm resetting the handset

Press OK at the re-program the phone screen

Enter the lock code again,
default password is the last 4 digits of cell phone number, unless
it has
been changed

Press OK
to confirm restoring the handset to the factory default settings

Note: Press *228 and SEND after the power cycle to re-program
the phoneHope this was helpful?